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PerkinElmer

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image: Mind the Clock

Mind the Clock

By | September 1, 2013

Many of the body's tissues can tell time, and these peripheral clocks can be influenced by environmental cues, such as the timing of food consumption.

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image: Ubiquitin Chains in Action

Ubiquitin Chains in Action

By | July 1, 2012

Present in every tissue of the body, ubiquitin appears to be involved in a dizzying array of functions, from cell cycle and division to organelle and ribosome biogenesis, as well as the response to viral infection. The protein plays at least two role

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image: Ubiquitin basics

Ubiquitin basics

By | July 1, 2012

Despite its discovery as a protein that seems to show up everywhere, at least in eukaryotic cells, researchers are only beginning to scratch the surface of all of the cellular functions involving ubiquitin. 

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image: Telomere Basics

Telomere Basics

By | May 1, 2012

Telomeres are repetitive, noncoding sequences that cap the ends of linear chromosomes. They consist of hexameric nucleotide sequences (TTAGGG in humans) repeated hundreds to thousands of times. 

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image: Designing Transition-State Inhibitors

Designing Transition-State Inhibitors

By | May 1, 2012

A transition-state mimic has the power to bind an enzyme at its tipping point as strongly as any available inhibitor and more strongly than most, preventing enzymatic activity. 

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image: Suspected Effects of Vitamin D

Suspected Effects of Vitamin D

By | March 1, 2012

Vitamin D has a variety of actions in the body. It binds to the vitamin D receptor (VDR), which then binds to the retinoid X receptor (RXR) and activates the expression of numerous genes. 

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image: How Autophagy Works

How Autophagy Works

By | February 1, 2012

There are five steps of autophagosome biogenesis: induction, expansion, vesicle completion, fusion, and cargo degradation. 

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image: Taste in the Mouth, Gut, and Airways

Taste in the Mouth, Gut, and Airways

By | December 1, 2011

The tongue may be the epicenter of taste sensation, but taste receptors are scattered throughout the digestive and respiratory tracts.

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image: Swallowing the Surgeon

Swallowing the Surgeon

By | October 1, 2011

In fewer than 15 years, nanomedicine has gone from fantasy to reality.

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image: Lost in Space

Lost in Space

By | September 1, 2011

Looking for a more realistic way to study memory, we turned to place cells­­—­a network of cells that record a rat’s memory of an environment. 

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